After a lot of formative work, including the Delphi Methodology with international experts, we arrived at what we hope is an exhaustive list of water insecurity-related experiences. This module, along with a few other short survey modules (e.g. on demographics, stress, water access) is being administered across a number of sites around the world in 2017-18. We will then perform a series of analyses to reduce the number of items in the scale and assess its validity and reliability across sites.